Hydraulic hybrid powertrain system

a hybrid powertrain and hydro-hydraulic technology, applied in hybrid vehicles, fluid couplings, couplings, etc., can solve the problems of many efficiency issues regarding the operation and control of the engine, and disadvantageous high weight of the system

Inactive Publication Date: 2006-08-24
LIMO REID INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These systems are disadvantageously high in weight because of the necessary duplication of parts.
While the attractiveness of such a hydraulic hybrid powertrain has been recognized, there remain many efficiency issues regarding the operation and control of the engine with respect to the hydraulic drive motor.

Method used

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  • Hydraulic hybrid powertrain system
  • Hydraulic hybrid powertrain system
  • Hydraulic hybrid powertrain system

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Embodiment Construction

[0017] The following patent applications are incorporated herein by reference: U.S. patent application Ser. No. 60 / 655,221 filed on Feb. 22, 2005; U.S. patent application Ser. No. 11 / 101,837 filed on Apr. 8, 2005.

[0018] Referring now to FIG. 1a, a hydraulic hybrid powertrain system in accordance with the present invention is indicated generally at 10. The powertrain system 10 may be utilized in a variety of installations, such as, but not limited to, an automotive vehicle, a boat, a submarine, a helicopter, or the like as will be appreciated by those skilled in the art, but for clarity will be referred to as if installed in an automotive vehicle in the following description of the present invention. The powertrain system 10 includes a power plant section 11, a mode selector module 43, a control section 59, and a power delivery section 76.

[0019] The power plant section 11 of the powertrain system 10 includes an engine 12 in communication with a fuel source 14. The engine 12 may be ...

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Abstract

A hydraulic hybrid powertrain system includes a power plant generating a high pressure fluid at an output, at least one drive motor responsive to the high pressure fluid for generating rotary motion at an output, and a mode selection means connected to the power plant output and the drive motor for selecting a mode of operation from a plurality of drive motor modes of operation including at least two of a drive mode, a neutral mode, a reverse mode and a park mode. The system includes a control means connected to the power plant and the drive motor for controlling operation of the drive motor in the plurality of modes of operation, a selectively actuated brake means for interrupting high pressure fluid flow to the drive motor, and a check valve bridge circuit for connecting the drive motor to a low pressure fluid source when the brake means is actuated.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application is a continuation-in-part of U.S. application Ser. No. 11 / 101,837 filed on Apr. 8, 2005. [0002] This application claims priority from the provisional application Ser. No. 60 / 655,221 filed on Feb. 22, 2005.BACKGROUND OF THE INVENTION [0003] The present invention relates generally to vehicle powertrain systems and, in particular, to a hydraulic hybrid powertrain system. [0004] So-called hybrid powertrains, such as for automotive vehicles, generally refer to a powertrain wherein an internal combustion engine is utilized in combination with an auxiliary motor, such as electric motor or a hydraulic motor, to drive the vehicle. Hybrid powertrain systems known as parallel hybrids include a typical mechanical drivetrain (coupled to the internal combustion engine) along with the auxiliary drivetrain (coupled to the auxiliary motor). These systems are disadvantageously high in weight because of the necessary duplication of parts. ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F16D31/02
CPCB60K6/12F04C2/102F04C2/18F04C11/001F04C14/185F16H61/4061Y02T10/6208B60W30/18127F16H61/4157B60W2540/12Y02T10/62
Inventor O'BRIEN, JAMES A. II
Owner LIMO REID INC
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